Lightbulbs are horrendous these days. On my first car they were like changing a room light bulb, you just reached in and changed the bulb. More recent cars I've had to take the battery out or pull out the whole headlight assembly. It's good to have an idea of how the bits of the car fit together and the main components but significant maintenance is only for hobbyists or people with a lot of time on their hands.

When I was first driving I went through how to change a wheel with my dad and also brake blocks, oil changes that kind of thing. Even my dad who has rebuilt engines from scratch normally goes to the mechanic for everything now.